Your Macbook Pro with Retina display just got a whole lot more functional with this powerful docking station. Turn your MacBook Pro into a full desktop system. No need to plug in cables each time you connect. Leave your cables plugged in. This quick loading DOCK brings you, a powered 5-port USB hub and Gigabit Ethernet, an audio port, an HDMI port, plus a Security Slot. This device works with the 15-inch MacBook Pro with Retina display models (Model A1398). A versatile docking station brings additional functionality to the MacBook Pro with Retina display such as Gigabit Ethernet, a USB 3.0 + 2.0 hub, a headphone port, and a Security Slot. Another Headphone port, a USB 3.0 port, SDXC Card Slot, another Thunderbolt port, and a port for MagSafe 2 on the MacBook Pro remain accessible for direct access to the computer. Connect up to two external monitors to the DOCK plus a range of USB portable devices. A lock slot for a keyed laptop lock provides security when you want to step away from your desk. Sleek & lightweight. Single step docking & undocking. Provides high speed Gigabit Ethernet. Supports an HDMI monitor or any HDMI screen. Mini DisplayPort provides Thunderbolt connectivity. Use with the laptop's lid opened or closed. Lock it with a Kensington keyed laptop lock (sold separately). Use at home, office, or while you travel.